Evidence check: IgE Allergietest in the context of Darmgesundheit

IgE allergy tests (specific immunoglobulin E) are clinically validated for diagnosing type I immediate hypersensitivity (e.g., pollen, foods). However, in the context of gut health, their utility is limited. Gut symptoms like bloating, diarrhea, or abdominal pain are often caused by non-IgE-mediated food intolerances (e.g., lactose intolerance, fructose malabsorption) or irritable bowel syndrome (IBS). These cannot be reliably assessed with IgE tests. Moreover, many commercial 'food sensitivity' tests (e.g., IgG-based) lack robust evidence. A positive IgE result for a food does not necessarily indicate impaired gut health – it may represent asymptomatic sensitization. For comprehensive gut health assessment, stool analysis, breath tests, and clinical history are more appropriate. Evidence: clinically established for allergies, but for gut health only indirect and often overestimated. Caveat: No direct studies linking IgE tests to gut health in the provided context.